W&M obtains MSD and VCP Closure for Laboratory Property

W&M obtained a Certificate of Completion through the Texas Commission on Environmental Quality (TCEQ) Voluntary Cleanup Program (VCP) at a groundwater contamination site which required risk-based assessment of soil, groundwater, surface water, sediment, and soil vapor; chemical and biological groundwater remediation; and a restriction on potable groundwater use through a Municipal Setting Designation (MSD).

Chlorinated Solvents – A Summary of Source, Fate, Transport, and Remediation Techniques

Chlorinated solvents such as tetrachloroethene (perchloroethene, PCE) and trichloroethene (TCE) have been widely used in various industrial applications for many years. PCE is used as a metal degreaser, in the textile industry, and as an intermediate in the synthesis of some fluorocarbons; however, it is most commonly associated with dry cleaning operations.  TCE is primarily used as a solvent to remove grease from metals and as a chemical intermediary, particularly in the production of the refrigerant HFC-134a.  It has been estimated that 6.4 million metric tons of PCE were manufactured and distributed throughout the U.S. from 1945 to 1984; while, production of TCE in the U.S. was reported to be 130,000 metric tons per year in 1985.  PCE is currently classified by the U.S. Environmental Protection Agency (EPA) as a “likely carcinogen” and by the World Health Organization (WHO) as a “probable carcinogen.”  Both the International Agency for Research on Cancer (IARC,
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